K&N 63 Series AirCharger High-Flow Intake Kit Reviews

Easy install, except for trying to find a 5/8 drill bit. Other than that, would've only taken 1.5 hours. Instructions were easy to understand.
Noticeable difference in throttle response.
Autoanything had the best price.

K&N 77 Series Metal Intake Kit Reviews

Very nice addition to my old Avalanche. Sound is great and seems to add power with more take off - wish I would have measured 0-60 before and after and see if could tell a difference. Install straight forward - took about an hour - hardest part for me was getting O2 sensor loose and then the rubber part around the cold air intake had messed up clip that I thought had to repair - turns out there is extra anyway so ended up cutting it off. Easy DIY job and looks great and sounds excellent!